package com.qk.interceptor;

import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

@Component
public class DemoInterceptor implements HandlerInterceptor {
    //目标资源方法（Controller方法）运行之前运行，返回值表示是否放行 ：true表示放行，false表示拦截
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("DemoInterceptor...preHandle...");
        return true;
    }

    // 目标资源方法controller方法执行之后运行，返回视图之前
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        System.out.println("DemoInterceptor...postHandle...");
    }

    //拦截方法之后，渲染视图之前执行
    //最后运行
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        System.out.println("DemoInterceptor...afterCompletion...");
    }
}
